Topic: Marine Chronometer
Not finding your answer? Try searching the web for Marine Chronometer
Answers to Common Questions
How to use a marine chronometer?
That's a lot for just 2 points. It took me several months of daily practice to become proficent in determining my position using a sextant after I learned all the math. The chronometer must be compared to a standard accurate time source (an... Read More »
Source: http://answers.yahoo.com/question/index?qid=20090914214913AAv6pwu
How does a marine chronometer work?
they work by a means of a back and forth rotating mass (with help from a spring) to regulate time, as opposed to a swinging pendulum. a long time ago clocks only way to regulate their "ticking" was pendulum that swings back and forth. this ... Read More »
Source: http://answers.yahoo.com/question/index?qid=20110919161317AAwbXz7
How does a marine chronometer determine longitude?
It does not depend on the speed of the ship, actually, because the chronometer is still useful even when the ship is not moving. Someone on the ship makes an observation of the position of the Sun, say at noon. Because Earth rotates, points... Read More »
Source: http://uk.answers.yahoo.com/question/index?qid=20110315124111AAcx...
Featured Content:
Marine Chronometer
More Common Questions
Answers to Other Common Questions
In 1761 Yorkshire carpenter John Harrison submitted a chronometer called H4 (it was his fourth attempt) for the £20,000 longitude prize that had been offered by the British government in 1714. His design, which resembled a pocket watch, use...
Read More »
Source: http://www.funtrivia.com/askft/Question102539.html
"Before the development of the marine chronometer, dead reckoning was the primary method of determining longitude" http://www.absoluteastronomy.com/topics/Dead_reckoning
Read More »
Source: http://www.funtrivia.com/askft/Question108671.html
Marine Chronometers are highly accurate clocks kept aboard ships to aid in navigation. The chronometer is set to Greenwich time. When the time of this clock is compared with the local time at sea a ship's navigator can determine the longitu...
Read More »
Source: http://nawcc.org/museum/nwcm/galleries/marine/marine.htm
A timepiece primarily designed to work on a sea vessel whereby traditional gravity based clocks were not practical. Imagine how a pendulum travel would be affected by the swaying of a ship in stormy waters. My Dad has an Ulysse Nardin from ...
Read More »
Source: http://www.rolexforums.com/showthread.php?t=60651
